Inferno By Dan Brown

(Robert Langdon # 4)

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With a relentless female assassin trailing them through Florence, he and his resourceful doctor, Sienna Brooks, are forced to flee.

Embarking on a harrowing journey, they must unravel a series of codes, which are the work of a brilliant scientist whose obsession with the end of the world is matched only by his passion for one of the most influential masterpieces ever written, Dante Alighieri's The Inferno.